Wells d9200 - No SIGNAL

Reeet-Mon

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Well i knew it was only a matter of time before i would have problems with this monitor.

Here's the deal - i turned on my cab today and the monitor worked fine, shut it down and restarted the game and now when it powers up i get a NO SIGNAL message on the screen then 2 seconds later the monitor clicks and then goes blank. Any ideas what causes this?

Thanks in advance
 
the NO SIGNAL and click and blank is normal.

did you try all the simple stuff first like making sure the game itself is powered up and working? are you using the CGA/EGA header or is it an actual VGA?

I had a D9200 one time go completely batshit crazy with the rapid clicking and all I did to fix that was take the VGA cable out of both ends and just put it back in. turned it back on and it worked again.

granted, I need to re-cap that monitor, but I haven't gotten around to it cause it's a NAOMI 2 game that locks up frequently and I just got it sitting in storage right now.

if the game works, and your video signal is ok, try throwing a different game at it on the alternate video. (ie: if it's a VGA game, try hooking it up to a standard res game, permitting you have access to a different game) sometimes these just act stupid.

I got another one that just pops up the OSD whenever it feels like it. or loses color bias.

yep, they look pretty, but they're built shitty.
 
I turned my mame cab on this morning and it worked fine, shut it down and tried restarting and all i get now is the NO SIGNAL & click, black screen.

I really cant hook this monitor up to another game as all the other machines are lined up packed in pretty tight against a back wall. Plus i would need to have a connector for the monitor which i know i don't have.

Hmmm
 
I really cant hook this monitor up to another game as all the other machines are lined up packed in pretty tight against a back wall. Plus i would need to have a connector for the monitor which i know i don't have.

Hmmm

While it could be a electronic issue (like bad caps or something), try the memory reset first.

While it's a pain in the butt, you need to get another cab away from the wall (preferably a standard-res game) and get it back to back with your MAME cab.

Then follow these steps:

1) On the D9200 - on the little board that the VGA connector plugs in, you'll see a connector on the top is plugged in to a spot labeled VGA. Move it to the spot labeled CGA/EGA.

2) Disconnect the video cable on your standard-res game monitor and plug it into the same type of pins on that little board.

3) Turn on both games.

4) If you get a picture on your D9200, then get the remote and hold down the DOWN and SEL buttons at the same time. This will give you the Factory Menu. Maneuver thru the menu to the RE and select it to do a Memory Recall. Then Exit to the Normal Menu and adjust any Brightness or Contrast or Color adjustments you may need.

5) Shut both games off. Put all the connectors back the way they were, and your MAME cab should now work.

If you can't get an image on the screen, then you won't be able to access the menu to do the recall. The fact that the No Signal is on the screen tells you the monitor works. The D9200 is notorious for memory problems that cause this type of thing...
 
No signal could aslo be that your PC isnt outputting (sp?) to the monitor. The way stuff is built these days its pretty common to have rapid failures of video cards, power supplies and mother boards.

Matt
 
yeah, I was actually leaning toward it being a situation where the comp might be in standby or the video is in standby.

try hooking a regular PC monitor up to it, and try again. :)
 
yeah, they're pretty evil. funny how my initial thought was to switch it over to the CGA/EGA input to maybe refresh it and kick it out of whatever bogus mode it's in. does that mean I'm thinking like mod now? ;) it could be something with the computer itself... you know those newfangled modern day video games, most often the reason they don't work (aside from the obvious: computers have no friggin business being used in arcade applications) is because they need to be manually turned back on.

I don't know what causes that, but I don't know... really, I'm leaning towards the D9200 just being shitty. lol but they look nice!
 
you know those newfangled modern day video games, most often the reason they don't work (aside from the obvious: computers have no friggin business being used in arcade applications)

Man, you said it.

Yesterday alone I had 7 repairs come in, ALL COMPUTERS! The little hot boxes being put into bigger hot boxes fail like theres no tomorrow.

Back to the original topic. If your monitor is displaying "no signal" then the monitor is working and your not getting an output from the PC. One known problem with the D9200's is that the video input boards cook themselves! If your VGA input doesnt work you can still use the CGA/EGA input but you will have to build an adapter or cut the cable open. You can input VGA into that header and the monitor will run at VGA resolutions.

FYI, some of the older D9200's could only display up to 640X480@60hz. The newer ones can handle 800X600@60hz.

One more thing, some computers power supplies dont dig the quick "off and back on" thing. You have to power it down, wait 5-10 seconds then power it back up. That could be an indication of a bad power supply.

Matt
 
One more thing, some computers power supplies dont dig the quick "off and back on" thing. You have to power it down, wait 5-10 seconds then power it back up. That could be an indication of a bad power supply.

Matt

lol, just like video games EH?

I had a computer nuke a power supply into oblivion. it was awesome. my bedroom smelled like BBQ for about...... a day. I remember that time distinctly, it was when the east coast was going through those major blackouts, and there I sat having to use my Pentium Pro 200 until the replacement came in. :p
 
lol, just like video games EH?

I had a computer nuke a power supply into oblivion. it was awesome. my bedroom smelled like BBQ for about...... a day. I remember that time distinctly, it was when the east coast was going through those major blackouts, and there I sat having to use my Pentium Pro 200 until the replacement came in. :p

Most video games with linear supplies are cool with the quick on and off, its the games with switchers that dont like that.

Brownouts are really bad for switching power supplies as you found out.

Matt
 
yeah, that was unrelated to me though, as I'm near Chicago, that was more a case of what happens when you throw too much of a load at a cheap power supply for 2.5 years. ;)

it was a fun exercise. most of what I do with these games now is based on old computer experiences.
 
Thanks guys, i pulled out my TNF and plugged that CGA cable in like suggested & the pic came right up on the 9200. Did the factory RE setting and plugged my MAME back in, and it works fine.

Not such a good thing that this happens, is there a way to prevent this from happening in the future?

THANKS AGAIN, TO ALL OF YOU!
 
there's several failure points on these. I don't know how much they play into one another but I had a green color transistor that I ran with a jumper wire for the last year, and about 2 weeks ago the monitor started spazzing out, losing the color bias information a lot, and if you tried adjusting the color levels in the OSD, you could see on the test pattern with color bars that the green had some weird artifacting in it whenever I changed ANY of the colors.

I replaced the transistor with a new one, not because the one that was in it was bad, but because the legs weren't already cut... I had to do some trace scraping, soldering that, bending the leg that way, etc. and well... all seems fine now. prior to that I was changing the factory menu shit like every 3 days.

I replaced all the transistors and corresponding resistors on the neckboard on this one and another D9200 that had intermittent missing red. red's supposedly the one that fails the most. it's not a tube thing, it's all in the neckboard. there was a recall on the neckboard, which if I'm not mistaken led to the creation of the D9400, somewhat of a bug-fixed D9200. those came with flat CRTs too, I think.

but yeah, Chad at Arcadecup told me that sometimes the drive transistors will get extremely hot and just burn out, other monitors won't even have this problem. another strange happening is that the yoke retaining clip will melt off, and the yoke will slide all the way down to the neckboard. :eek:

if you have way of fitting some kind of cooling device on the monitor, go for it. you can turn the color drives down in the factory menu too, they won't run as hot. the image quality might suffer a tad, but you won't toast anything that way.

anyway, long story short, after I fed you the long story, I think in addition to the IC getting corrupted sometimes, that if all the other electronics have any sort of problems, it'll cause the monitor to go batshit too. it's not necessarily a BAD monitor, it just has crap quality, Wells had some people in Korea make them, and they were of noticeably inferior build quality to the U2000/K7500/U3000s they made before, but this one's a one size fits all application, which is why MAME people like them.
 
Thanks guys, i pulled out my TNF and plugged that CGA cable in like suggested & the pic came right up on the 9200. Did the factory RE setting and plugged my MAME back in, and it works fine.

Not such a good thing that this happens, is there a way to prevent this from happening in the future?

THANKS AGAIN, TO ALL OF YOU!

Great. I figured that was the problem. While all the other options given were worth noting, this was the most likely cause and why I suggested it first.

:D

I don't know if the memory chip can be upgraded to keep this from happening or not....
 
the IC in question, I don't think there's a direct replacement out there. if you dig around on google enough, I think someone from another forum found a replacement that they compared datasheets on and found one that functioned the same, but I think nobody actually replaced it with that.

I called Wells-Gardner up and asked about it and they told me to just buy a new D9800, as "the parts aren't made for that model (D9200) anymore."

yeah, I know, it sucks.
 
I just remembered something that Wells told me to look for a long time ago.

If the harness that runs to the little control board is draped over the power supply section the monitor will "adjust itself" on the fly. The explanation was that the high frequency pulses from the power supply section caused feedback in the harness and drove that section of the board crazy. It would do all sorts of things from changing screen contorls to turning colors off.

Matt
 
well that might explain something. lol

the psycho D9200 I got is in one of those large blue and silver NAOMI cabs where you have to nearly sacrifice your life to unbolt the stupid fine threaded bolts to get the monitor cover off. who knows how that remote board cable is draped in there.

did I mention that that same monitor, the degauss function does not work at all by pressing the SEL button anymore?
 
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